Mercurial > jmeCapture

     1 package com.aurellem.capture;

     2 

     3 import com.jme3.system.Timer;

     4 

     5 /**

     6  * RatchetTimer is the same as IsoTimer, except that it will ensure

     7  * that the simulation does not proceed any faster than it would had

     8  * NanoTimer been used.

     9  * 

    10  * @author normenhansen, Robert McIntyre

    11  */

    12 

    13 public class RatchetTimer extends Timer{

    14 	private float framerate;

    15     private int ticks;

    16     private long lastTime = 0;

    17 

    18     public RatchetTimer(float framerate) {

    19         this.framerate = framerate;

    20         this.ticks = 0;

    21     }

    22 

    23     public long getTime() {

    24         return (long) (this.ticks * (1.0f / this.framerate) * 1000f);

    25     }

    26 

    27     public long getResolution() {

    28         return 1000000000L;

    29     }

    30 

    31     public float getFrameRate() {

    32         return this.framerate;

    33     }

    34 

    35     public float getTimePerFrame() {

    36         return (float) (1.0f / this.framerate);

    37     }

    38 

    39     public void update() {

    40         long time = System.currentTimeMillis();

    41         long difference = time - lastTime;

    42         lastTime = time;

    43         if (difference < (1.0f / this.framerate) * 1000.0f) {

    44             try {

    45                 Thread.sleep(difference);

    46             } catch (InterruptedException ex) {

    47             }

    48         }

    49         this.ticks++;

    50     }

    51 

    52     public void reset() {

    53         this.ticks = 0;

    54     }

    55 }

    56
author	Robert McIntyre <rlm@mit.edu>
date	Sun, 15 Jan 2012 04:10:37 -0700
parents
children	155c70b7e6de